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Systems 



IBM 3215 

Console Printer-Keyboard 

Component Description 

This reference publication describes the functions and 
operation of the IBM 3215 Console Printer-Keyboard. 
Also presented are the printing method, control keys and 
lights, functional timing, forms controls, specifications, 
and make-ready procedures. 

For system operation (including programming and 
operating procedures), refer to the IBM System/360 and 
System/ 370 Bibliography, GA22-6822, {or Functional 
Characteristics and Operating Procedures manuals for the 
particular system and model. 







Second Edition (February, 1971) 

This is a major revision of, and obsoletes GA24-3550-0. The section "Operating 
Procedures" has been added. This section and other changes to the text are indicated 
by a vertical line to the left of the change or addition; added illustrations are denoted 
by the symbol • to the left of the caption. 

Changes are continually made to the information herein; any such changes will be reported 
in subsequent revisions or Technical Newsletters. 

Requests for copies of IBM publications should be made to your IBM representative or to 
the IBM branch office serving your locality. This manual has been prepared by the IBM 
Systems Development Division, Product Publications, Dept. K10, P.O. Box 6, Endicott, 
New York 13760. A form for readers' comments is provided at the back of this publi- 
cation. If the form has been removed, comments may be sent to the above address. 

© Copyright International Business Machines Corporation 1970, 1971 



Contents 



Introduction 5 

Printing Method 6 

Machine Operation 7 

Keyboard Functions 7 

Printer Functions 7 

Programming Information 8 

Timing Considerations 8 

Forms Handling 8 

Form Controls 8 

Forms Specifications 8 

Operating Procedures 8 

Inserting Forms 8 

Replacing the Ribbon 10 

Index. 11 



■ 1BM 3215 Con 



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IBM 3215 Console Printer- Keyboard 



The 3215 Console Printer-Keyboard (Figure 1) is a table-top 
printer and keyboard that provides independent keyboard 
entry and printed output for the IBM data processing system 
to which it is attached. The keyboard (Figure 2) permits 
rapid and flexible communication between the operator 
and the data processing system, for manual entry into 
storage and alter/display functions. Eighty-eight (88) 
graphic characters can be sent to the system at a rate up to 
15 characters per second. 

Characters are printed as a pattern of dots formed by wires 
striking the ribbon and paper as the print head moves. 
Under program control, printing can occur at a rate up to 
85 characters per second. Character spacing is 10 per inch 
(25,4 mm) and up to 126 per line. Both left and right 



margins are fixed according to the width of the pin-feed 
platen installed. Vertical single spacing is six lines per inch; 
double spacing is three lines per inch e Depending on the 
paper and carbon used, an original and up to five legible 
copies can be made. A three-part form is recommended 
as maximum. 

The 3215 prints the 88 graphics (upper and lower case) 
currently in use on the 1052 Printer-Keyboard in the 
IBM System/360 Data Processing System. The underscore 
corresponds to the bottom row of dots, and therefore, 
cannot be used with other characterSc 

Data signals to the printer and all power and control for 
the 3215 come from the system processing unit. 



INTVN 
REQD 




CANCEL 








NOT 
READY 




READY 








ALT/ DISP 
MODE 




ALTER/ 
DISPLAY 







1 


< 

2 


3 


4 


5° 


6 


> 

7 


8 


( 
9 


) 



— 


Ull 


' 






HHHHlTEHHHHH 


RETURN 




LOCK 


A 


s 


• ' 


G 


H 


J 


K 


L 


! 

$ 


1 # 








SHIFT 




Z 


X 


C 


V 


B 


N 


M 


1 


1 —\ 


9 

/ 




SHIFT 





END 




PROCEED 
















ALARM 


REQUEST 
PENDING 












ALARM 
RESET 




REQUEST 



LIGHTS 




KEYS 



Figure 2. Keyboard Schematic 



3215 Console Printer-Keyboard 5 



Printing Method 

Printing on the 3215 is done by seven wires arranged 
vertically in the print head (Figure 3). Decoded signals 
from the system selectively allow the print wires to strike 
the ribbon and paper. The pattern of dots formed by the 
ends of the wires corresponds to a stored matrix in the 
system processing unit, 

The print head moves across each character to form a 
7x7 dot matrix. As required by the character pattern, 
each wire may strike up to four times per character (for 
example, wire No. 5 in Figure 3). Three alternate positions 
allow for curved and diagonal elements (wire No. 3 in 
Figure 3). 

The print head moves across the print line at a rate up 
to 8.5 inches (215,9 mm) per second whether printing or 
spacing. An indicator on the front of the printer designates 
the next print position for the print head. 

A maintenance monitor indicates to service personnel 
when maintenance should be scheduled. 




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12 3 4 5 6 7 
O Standard Firing Positions 
• Alternate Firing Positions 



Figure 3. Print Mechanism and Character Construction 



MACHINE OPERATION 



Keyboard Functions 

The keyboard has 44 character keys and the normal shift, 
shift lock, return keys, and space bar that perform normal 
typewriter functions. Figure 2 shows the control keys and 
indicator lights for the keyboard. 

Intervention Required 

This light indicates that the not-ready key has been pressed, 
the printer has run out of forms, or the cover is open. 
Loading forms, closing the cover, and/or pressing the ready 
key turns off this light. 



Cancel 

Pressing this key terminates a read operation and signals the 
system to disregard the data being transmitted. If this key 
is used to end an alter/display operation, an error condition 
results. 

Ready 

Pressing this key places the printer-keyboard in a ready state 
when forms are in the printer and the cover is closed, 

Not Ready 

Pressing this key places the printer-keyboard in a not-ready 
state. 

Alter/Display 

Pressing this key submits a request for an alter/display 
operation. The proceed (and alter/display mode lights) 
must be on before input data can be typed at the keyboard. 

Alter/Display Mode 

This light indicates that a request for an alter/ display 
operation has been accepted. 

End 

Pressing this key terminates a read, write, or alter/display 
operation. 

Proceed 

This light indicates that input data can be typed at the 
keyboard. 

Alarm 

This light indicates that an alarm command was issued to 
alert the operator that the system requires manual attention. 
An audible tone sounds for about 1-1/2 seconds. 



Alarm Reset 

Pressing this key turns off the alarm light. 

Request 

Pressing this key indicates to the system that the operator 
is ready to key information. The request pending light 
turns on if the system is busy. 

Request Pending 

This light indicates that the request key has been pressed, 
but that the system is not yet ready to accept data. This 
light turns off and the proceed light turns on when the 
system is ready to accept data. 

Printer Functions 

All functions of the 3215 are controlled by the system 
either manually from the keyboard or by program control. 
In addition to printing, the functions are: 

Space 

This function moves the print head one character space to 
the right without printing. 

New Line 

This function combines the carrier-return and line-feed 
operations. A new-line signal returns the print head to 
the left margin at 15 inches (381 mm) per second minimum 
and advances the platen a single or double line space 
according to the setting of the line-feed select lever. This 
function can be initiated manually, from the program, or 
when the right margin is sensed. Using this function 
successively provides variable vertical spacing. 

Test Switches 

Three switches facilitate servicing the printer* 

Off-Line, On-Line. This switch places the printer off-line 
The two other switches operate only when this switch is 
in the off-line position. 

Reset Off-Line. Operating this spring-loaded switch resets 
the circuitry for the printer. 

Continuous, Off /Key board, Stop -Start Placing this switch 
in its top position causes the machine to print a line of 
H's for testing printer operation in continuous mode. With 
the switch in the bottom position, the machine prints a 
line of H's in stop-start mode. In the middle position, the 
action of the switch depends upon the attached system: 
System/370 Model 145 - Off, no action 
System/370 Model 155 -printer responds to the key 
pressed on the keyboard. 



3215 Console Printer-Keyboard 7 



PROGRAMMING INFORMATION 

Functions and data initiated from the keyboard are trans- 
mitted to the system by an 8-bit EBCDIC code. 

All printing, carrier operations, and forms-movement 
controls are initiated in the system by program control, or 
manually by keyboard operation. 

For programming information, refer to IBM System/ 360 
and System/ 370 Bibliography , GA22-6822, for the 
Functional Characteristics manual for the particular system 
and model. 

Timing Considerations 

Figure 4 shows the time in milliseconds required for printer 
operations. In a new-line operation, line feed is overlapped 
with carrier return if the return is more than 1 6 print 
positions. 



Operation 


Time (milliseconds) 


Print or Space 


12 ms/Print Position 


New-Line 

Carrier Return 

Line Feed 


6.67 ms/Print Position 
(Less than 7 spaces, 
12 ms/Print Position) 
140ms/Line 



Figure 4. Timing for Printer Operations 



FORMS HANDLING 

Forms placed on the lower platform of the forms stand 
enter the rear of the printer, pass up through a channel, 
and up over the platen* Forms are stacked on the top 
platform. 



Form Controls 



Copy-Control Lever 

The copy-control lever adjusts the clearance between the 
platen and the print head to accommodate the thickness 
of the forms used. Five positions of the lever allow adjust- 
ments for forms of thickness up to a maximum of .01 8 inch 
(0,46 mm). 

End-of -Forms Switch 

The end-of-forms switch signals the system that the end of 
the form is within 4-1/4 inches (107,9 mm). On the system 
console, the keyboard-printer lights show not-ready and 
intervention required. 

Forms Specifications 

The 3215 accepts marginally punched, continuous-form 
paper. Forms can be one to six parts depending on the 
weight of paper and carbon used. For optimum feeding 
and stacking, no more than three parts are recommended. 
Total thickness cannot exceed .018 inch (0,46 mm). 
Stapled forms cannot be used. 

Form width must correspond to the pin-feed platen 
installed. See Figure 5. Form length can be 3 to 14 inches 
(76,2 to 355,6 mm). For optimum stacking, 11 inches 
(279,4 mm) is recommended. Forms should not be longer 
than the depth of the forms stand provided. 

The special ribbon cartridge (part 1 136906, or equivalent) 
has a ribbon life of at least two million characters. 

For more complete specifications, refer to the Systems 
Reference Library Manual, Form-Design Considerations- 
System Printers, GA24-3488. 



Overall Width 


Hole-to-Hole Width 


Print Positions 


in. 


mm 


in. 


mm 


Maximum 


13 


330,2 


12 1/2 


317,5 


120 


13 5/8 


346,1 


13 1/8 


333,4 


126 



Figure 5. Available Pin-Feed Platens 



Paper-Advance Knobs 

Rotating the knob on either end of the platen moves the 
form for coarse vertical positioning. 

Vertical Alignment Vernier 

Pressing in and rotating the paper-advance knob on the 
right end of the platen provides fine vertical adjustment 
of the form with the print line. 

Line-Feed Select Lever 

The line-feed select lever allows the operator to select 
single or double vertical line spacing. 



OPERATING PROCEDURES 

For operating the 3215 as part of a particular system, refer 
to the IBM System I '360 and System/ 370 Bibliography, 
GA22-6822, for the Operating Procedures manual for the 
particular system or model. Figure 6 shows the operating 
controls used for making the printer ready. 

Inserting Forms 

1 . Raise the printer cover. 

2. Set the copy-control lever to position 5 for maximum 
clearance between the print head and the platen. 

3. Raise both doors covering the pin-feed mechanism at 
the ends of the platen. 



From the rear of the machine: 

4. Place the forms on the lower rack of the forms stand. 

5. Insert forms (side to be printed down) in the paper 
feed slot The form enters easiiy if started with one 
corner entering the feed slot first, 

6. Work the form up in front of the platen. 

From the front of the machine: 

7. Grasp the form and position it on the platen pin-feed 
mechanism, 

8. Close the doors over the feed pins. 

9. Set the copy-control lever to one of the four positions 
determined by the number of parts in the form being 
used. 

Position Type of Form Used 

1 1 Part 

2 2 or 3 Parts 

3 4 Parts 

4 5 or 6 Parts 



10, Set the line-feed select lever for single or double spacing, 

1 1 , Press in and rotate the right paper-advance knob for 
vertical alignment of the form with the print line. 

Note 1: To move the form backward, rotate the paper- 
advance knob backward and pull the form from behind 
the machine to keep the form from buckling at the 
print head. 

Note 2: If checking for precise alignment is necessary: 

a. Set the left of the test switches to OFF-LINE and 
the right switch to CONTINUOUS (a continuous 
line of H's prints), 

b. Press in and rotate the right paper-advance knob to 
align the print line, and 

c. Return the left service switch to ON-LINE. 

12. Rotate the paper-advance knob to feed the form through 
the form exit slot in the cover. 

13. Close the cover. 



Copy-Control 
Lever 



Pin Feed Door 



Paper-Advance 
Knob 



Pin Feed Door 

Paper Advance 
Knob 




Test Switches 



Ribbon Cartridge 



# Figure 6. Printer Operating Controls 



3215 Console Printer-Keyboard 9 



14. Press the ready key on the keyboard. 

15. When printing starts, check that the forms stack 
properly on the forms stand. For efficient stacking, 
the fold should be in the same direction as the 
original fold. 



Replacing the Ribbon 

1 . Raise the printer cover. 

2. Remove the used ribbon and cartridge. (Before removing 
the used ribbon, observe how the ribbon is threaded so 



as to be familiar with the ribbon schematic shown on 
the machine and also in Figure 7. 

3. Press the new ribbon cartridge in place. Locating pin 
assures correct cartridge and proper positioning. 

4. Draw out some ribbon and thread it around guide pins 
and print head as shown in the schematic. Do not twist 
the ribbon. 

5. Rewind any slack ribbon back into the cartridge by 
rotating either of the ribbon feed hubs in the direction 
shown on top of the cartridge. 

6. Close the cover. 

7. Press the ready key on the keyboard. 



Print Head 



Ribbon 
Cartridge 




\i i in i u n i in n nuui n n 

Print Position Scale 



# Figure 7. Ribbon Schematic 



10 



Index 



alarm 7 
alarm reset 7 
alignment vernier 8 
alter/ display 7 
alter/ display mode 7 



cancel 7 
carrier return 

function 7 

timing 8 
cartridge, ribbon 8 
channel 8 

character construction 6 
character spacing 5 
continuous-form paper 8 
continuous mode 7 
continuous switch 7 
control signals 5 
controls, forms 8 
copies 5 

copy-control lever 8 
copy-control lever position 



13 

data signals 5 



hole-to-hole width 8 



indicator, print position 6 
input rate 5 
inserting forms 8 
intervention required 7 



keyboard functions 7 
keyboard schematic 5 
keyboard switch 7 
keys 7 



legible copies 5 
lights 7 
line feed 

function 7 

timing 8 
line-feed select lever 

function 8 

setting 7 
loading forms 8 



01 



EBCDIC 8 

end 7 
end of forms 

intervention required 7 

switch 8 



firing positions 6 

forms 

controls 8 
handling 8 
insertion 8 
movement 8 
platform 8 
specifications 8 
stacking 8 
stand 8 
width 8 

functions 

keyboard 7 
printer 7 



graphic characters 5 



machine operation 7 
maintenance monitor 6 
manual entry 5 
margins 5 
matrix 6 

mode alter/ display 7 
monitor, maintenance 6 
multiple-part forms 8 



m 



new line 

function 7 
timing 8 

not ready 7 



□ 



off-line 7 

off/keyboard switch 7 
on-line 7 

operating procedures 8 
output rate 5 
overall width 8 



3215 Console Printer-Keyboard 11 



paper 8 

paper advance knobs 8 

pin-feed platen 8 

pitch, character 5 

platen pin-feed 8 

platform, forms 8 

position, copy-control lever 

power 5 

print head 6 

print line 5 

print mechanism 6 

print-position indicator 6 

print positions 

pin-feed platen 8 

print line 5 
print timing 8 
print wires 5 
printer functions 7 
printer timing 8 
printing method 6 
printing rate 5 
proceed 7 
program control 8 
programming information 



signals 6 
space 

function 7 

timing 8 
spacing 5 
spacing, character 5 
specifications, forms 8 
staples 8 
stop/start mode 7 
stop/start switch 7 
switches 7 



test switches 7 
thickness 8 
timing considerations 
typing rate 5 



underscore 5 



rate 



carrier return 7 
print head 6 
printing output 
typing input 5 

ready 7 

request 7 

request pending 7 

reset, alarm 7 

reset off-line 7 

ribbon 

replacement 10 
specifications 8 



vertical alignment vernier 
vertical spacing 5 



|Q 



width, form 8 



8-bit code 8 

44 character keys 7 

88 graphics 5 

1052 Printer-Keyboard 5 



12 



READER'S COMMENT FORM 



IBM 3215 Console Printer-Keyboard Component Description 



Order No. GA24-3550-1 



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Programming 

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• We would appreciate your comments; please give specific page and line references where appropriate. 



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GA24-3550-1 



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